9) A sum of Rs. 725 is lent in the beginning of a year at a certain rate of
interest. After 8 months, a sum of Rs. 362.50 more is lent but at the
rate twice the former. At the end of the year, Rs. 33.50 is earned as
interest from both the loans. What was the original rate of interest?

- A)3.6%
- B)4.5%
- C)5%
- D)6%
- E)None of these

**Answer: **
E